Stuffing-box.



E; 0. KAHLE. STUIFING BOX. APPLICATION FILED JUNE 3, 1911.

. Patentd Jan.23, 1912.

1 I wms llllll 1 1.1 llllllY I WITNESSES A TTORNE Y3.

-ing located 1n a EUGENE G. KAI-ILE, OF OIL CITY, PENNSYLVANIA.

STUFFING-TBOX.

Application filed June 3, 1911.

Specification of Letters Patent. I

Patented Jan. 23, 1912. Serial No. 631,034.

to the accompanying drawing.

This invention relates to stuffing boxes and more particularly to boxesdesigned for polish rods of oil wells, pistons and other bodies aroundwhich is maintained a nonleakable connection between another body.

The objects of my invention are to prov vide positive and reliablemeans, in a manner as will be hereinafter set forth, for maintaining aconstant pressure upon packbox or similar receptacle, and to furnish astuffing box with an auxiliary supply of packing material adapted to beshifted to compensate for the .wear and tear upon the main packing ofthe box.

Other objects of my invention are to eliminate the uneven and irregulartension upon 1 packing by providing means for automati- 'cally exertinga constant and invariable minimum pressure upon the packing to preventleakage, to produce thereby a monetary saving by providing viates theunnecessary pressure andv necessity of removing old packing.

Further objects of the lnvention are v to furnish a stationary stuffingbox with a movable packing gland adapted to be fed by gravity toward thestationary box to supply the same with packing, and to provide a'stuffing box that can be advantageously used in a vertical position forexcluding rain, snow, ice and other matter that under ordinaryconditions cause considerable trouble in maintaining an water tightconnection around a movable body.

Further objects of my invention are to provide a gravity packed'stufling box in which the packing can be easily andquickly removed orrenewed, and to accomplish the above results by a mechanicalconstruction that is simple, durable, easy to install and highlyefiicient for the purposes for which it is intended.

With the above and other objects in view, the invention resides in thenovel construction, combination and arrangement'of parts claims.

a packing box that ob-' 3, the rings being air, steam or lfandadapted to,11 providing clearance for t over the gland to be hereinafterspecifically described and then claimed.

Reference will now be had to the drawing, wherein there is illustrated apreferred embodiment of the invention, but it is to be understood thatthe structural elements thereof are susceptible to such changes as fallwithin the scope of the appended In the drawings :-Figure 1 is a sideelevation' of the stuflingabox, Fig. 2 is a vertical sectional view ofthe same, Fig.3 is a plan of the stuffing box, and Fig. 4 is ahorizontal sectional view of the movable gland thereof. v

The reference numeral 1 denotes a cylindrical packing box having thelower end thereof provided with a central longitudinal bore 2 for apiston rod3. The bore 2 has the upper end thereof enlarged to provide atapering portion 4, a cylindrical portion 5 and another tapering portion6, the cylindrical portion 5 being arranged intermediate the taperingportions 4 and 6, with the tapering portiont converging toward the bore2. The enlargedend of the bore is adapted to accommodate-packing rings 78 and 9, the packing rings? being arranged in the tapering portion 4 andsurroundingthe rod of various sizes whereby they can be superimposed toinsure a nonleakable connection between the rod and the wallsoftheborerThe rings 8 are all of the'same size and are located in thecylindrical portionv 5, while the rings 9 vary in size and snugl fitwithin the tapering portion 6. The rings 7, 8 and 9. are preferably madeof rubber or a. yieldable composition, although any desired material canbe used and packed within the enlarged end of the bore 2.

Arranged upon the upper end of the box cup-shaped packing holder orgland 10 having the topthereof provided with an opening he rod 3. Thelower end of the gland has a flange 12 and this flangeis adapted .tosupport a plurality. of superimposed circular weights 13. The weights 13are slotted as at 13 said slot being approximately. the same width asthe diameter of the rod 3; the interior circular opening being of, suchdiameter as will permit the weights to snugly embrace and pass 10,resting upon'the flange slide thereon is an-inverted said 12; the ringsbeing so formed as to prevent a lateral displacement from said gland.Arranged within the gland are a plurality of superimposed packing rings14, all of the same diameter and made of a material simi-- lar to therings of the box.

The top of the box is provided with a lubricant port 15, whereby alubricant can be placed in the stulflng box or the gland thereof toinsure an easy movement of the rod 3 within said stuffing box. I

In order that the stuffing box can be secured to a suitable support, thebox has the lower end thereof screw threaded and provided with a flangel6.

The collar 10 is integral with the gland 10 and is provided with a screw10 for the purpose of rigidly securing the gland 10 to the rod 3, whilerefilling the gland 10 with packing.

The gland 10 is adapted to be fed by gravity upon the stuffing, box 1and in order that the packing rings of the gland will be fed into thebox to compensate for the wear and tear upon the rings 7, 8 and 9, asufficient number of weights can be placed upon the flange 12 of thegland. With the stuffing box and the gland cylindrical, the weights canbe made circular whereby they will exert a pressure that is equallydistributed upon the packing in the stufling box, thereby insuring anequal wear of the packing without the necessity of giving the same anyattention, other than to place packing rings within the gland 10 as theyare used.

When the stufling box is used in a vertical position, it is unnecessaryto use nuts and bolts or any other fastening means for the purpose ofadjusting the gland relatively to said box, although in some cases itmay be found desirable'to connect the gland .10 and casing 1, by n'ieansof bolts and nuts (not shown inthe drawings) to prevent the displacementof the gland 10, should the latter adhere to the rod 3, from any causewhatever, such as freezing, etc.

*What Iclaim is o 1. A stuffing box having a bore formed therein adaptedto receive a rod, compressible packing rings arranged in the bore ofbox, and a gland movably mounted upon the end of said box and containingcompressible packing mounted upon said. rings and adapted to enter saidbox as the gland descends.

2. A stuffing box having a bore formed therein with one end of said boreenlarged, said enlarged end of said bore having tapering and cylindricalportions, packing rings of various sizes arranged in the enlarged end'ofand snuglyfitting the wall-of the bore of said box, said packing ringsbeing compressible, a weighted gland movably mounted upon the upper endof saidbox,

and compressible packing rings arranged in said gland and mounted uponthe packing rings in the box and adapted to enter said box as the glanddescends.

3. The combination with a rod, of a stuffing box surrounding said rod,compressible packing rings of various sizes arranged in said box, agravity gland movably mounted upon the upper end of said box and adaptedto descend thereon by gravity, and compressible packing rings arrangedwithin said gland and mounted upon the'packing rings in the box andadapted to be fed into said box as the gland descends.

4. A. stufiing box having a bore formed therein with the upper end ofsaid bore enlarged to provide tapering and cylindrical portions,compressible packing rings of various sizes arranged in theenlarged endof the bore of said box, an inverted cup-shaped gland movably mountedupon the outer side of said box and adapted to descend thereon bygravity, circular weighted elements mounted upon the gland for loweringit,

and packing rings arranged-in said gland and mounted upon the packingrings in the box and adapted to be fed into said box as the glanddescends.

5. A stuffing box having a bore formedtherein with the upper end of saidbore enlarged to provide tapering and cylindrical portions, compressiblepacking rings of va-- rious sizes arranged in the enlarged end of thebore of said box, an inverted cup-shaped gland movably mounted upon theouter side of said box and adapted to descend thereon by gravity, saidgland provided with a flanged compressible packing ring arranged in saidgland and mounted upon the packing rings in the box and adapted to befed into said box as the gland descends, and a plurality of circularweights detachably mounted upon the flange of said gland for loweringthe latter, substantially as described.

6. Astufiing box consisting of telescopic cylindrical portions, ringsarranged therein, the upper 'ofsaid' portions provided with a flange anda removable weight surrounding the flanged cylindrical portion andvmounted upon the flange of the latter thereby'causing the up.- perportion to descend upon the lower. portion and forcing the packing ringsof the upper portion into those of the lower portion. V

'7. A stuiflng box'comprising. a pair of telescopic hollow members,compressible packing rings mounted therein, a support carried by one ofsaid'members, and evenly distributed weighting means mounted upon saidsupport for causing that member having the support to descend wherebythe packing rings carried by said member W111 'be caused to enter theother of said members."

compressible packing 8. A stuifing box consisting of two tele- Intestimony whereof I afiix my signature scopic members, a plurality ofcircular in the presence of two witnesses. weights surrounding one ofsaid members,

and evenly distributing weight thereon to EUGENE C. KAHLE. cause saidmember to descend uniformly Witnesses:

with respect to the other member, and MAX H. Snonovrrz,

means for supporting said weights. KARL H. BUTLER.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of ratents, Washington, D. G.

